CN105122415A - Ground-fault-detecting tripping unit - Google Patents
Ground-fault-detecting tripping unit Download PDFInfo
- Publication number
- CN105122415A CN105122415A CN201480016682.3A CN201480016682A CN105122415A CN 105122415 A CN105122415 A CN 105122415A CN 201480016682 A CN201480016682 A CN 201480016682A CN 105122415 A CN105122415 A CN 105122415A
- Authority
- CN
- China
- Prior art keywords
- circuit
- blow vent
- detection
- leakage
- breaker
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/08—Terminals; Connections
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/02—Housings; Casings; Bases; Mountings
- H01H71/025—Constructional details of housings or casings not concerning the mounting or assembly of the different internal parts
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H83/00—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current
- H01H83/02—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by earth fault currents
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/52—Cooling of switch parts
Landscapes
- Breakers (AREA)
Abstract
This ground-fault-detecting tripping unit (4), which can be externally mounted to a circuit breaker, is provided with the following: a housing (11); a load terminal that is connected to an electrical wire; a connecting terminal (7a) that is connected to a load-side terminal on the circuit breaker; a main circuit bar (7) that is provided so as to form an electrical path that connects the load terminal and the connecting terminal (7a); a ground-fault-detecting circuit that is provided on the path formed by the main circuit bar (7) and detects ground faults; and a tripping drive unit that drives the circuit breaker so as to break the circuit if the ground-fault-detecting circuit detects a ground fault. The housing (11) has the following: a first surface, on the side where the load terminal is, that has a first ventilation hole (16); and a second surface that faces the first surface and has a second ventilation hole (18). The main circuit bar (7) is located In The Flow Path Between The First Ventilation Hole (16) And The Second Ventilation Hole (18).
Description
Technical field
The present invention relates to the residual current circuit breaker of the external solution button being applicable to possess circuit-breaker and the detection of electrical leakage being filled to circuit-breaker is outward triped unit.
Background technology
In the past, detect electric leakage if propose, cut off the residual current circuit breaker (for example, referring to patent documentation 1) of circuit.With regard to residual current circuit breaker, there is the residual current circuit breaker being built-in with earth leakage detection functions in circuit-breaker, and be built-in with the residual current circuit breaker of earth leakage detection functions in the equipment being filled to circuit-breaker outside.The latter is called " residual current circuit breaker of external solution button ", and the equipment being filled to circuit-breaker is outward called " detection of electrical leakage trip unit ".
Generally speaking, circuit-breaker possesses power supply terminal portion in its end side and possesses face terminals portion in another side, and between two-terminal portion, possesses contact portion, release gear portion and carry out the handle mechanism portion be turned on or off of contact portion.In addition, also there is following circuit-breaker, it possesses the arc chute portion electric arc produced when being triped by release gear portion in contact portion being carried out to extinguishing arc.On the other hand, detection of electrical leakage unit of triping at one end possesses splicing ear portion and possesses face terminals portion in another side in side, and between two-terminal portion, possess electric-leakage detection circuit, become the main circuit of circuit rod and respond detection of electrical leakage signal thus the drive division of triping in the release gear portion of drive circuit circuit breaker.Trip in outside in the residual current circuit breaker of formula, be connected with detection of electrical leakage in the face terminals portion (hereinafter referred to as " the splicing ear portion of circuit-breaker ") of circuit-breaker and trip the splicing ear portion of unit.
Detection of electrical leakage trip unit detection of electrical leakage in use such as zero-phase current transformer (zero phase current transformer, ZerophaseCurrentTransformer, hereinafter referred to as " ZCT "), in this ZCT break-through have main circuit rod.Such as during 3 phase 4 line, in ZCT, break-through has 4 main circuit rods.During energising, electric-leakage detection circuit detects the difference through the past road of ZCT and the electric current in return road.If not yet produce electric leakage, then above-mentioned difference is zero, if produce electric leakage, the electric current in Ze Wang road and return road can produce difference.Amplify this difference and cut off circuit.The end side of main circuit rod of establishing as substituting of electric wire forms detection of electrical leakage and to trip the splicing ear portion of unit, is fixed on the splicing ear portion of circuit-breaker by terminal screws.Another side of main circuit rod is fixed on detection of electrical leakage via terminal board by terminal screws and is triped the face terminals portion of unit.
At first technical literature
Patent documentation
Patent documentation 1: JP 2011-124217 publication
Summary of the invention
The problem that invention will solve
Trip in outside in the residual current circuit breaker of formula, the temperature in the splicing ear portion of circuit-breaker during energising rises higher than during only to circuit breaker electrifying.Therefore, the temperature of the lid near the splicing ear portion that there is circuit-breaker rises the tendency uprised.
The object of the invention is to, the detection of electrical leakage providing the temperature near a kind of splicing ear portion that can suppress circuit-breaker to rise is triped unit.
For the means of dealing with problems
A mode of the present invention is that a kind of detection of electrical leakage is triped unit, can be filled to circuit-breaker outward.Detection of electrical leakage unit of triping possesses: casing; Face terminals portion, is connected to electric wire; Splicing ear portion, is connected with the load side terminal portion of described circuit-breaker; Main circuit rod, is arranged as the circuit connecting described face terminals portion and described splicing ear portion; Electric-leakage detection circuit, is located on the path of described main circuit rod, detects electric leakage; And drive division of triping, drive described circuit-breaker to carry out circuit breaker action when described electric-leakage detection circuit detects electric leakage; Described casing comprises: first surface, is located at the side that described face terminals portion is positioned at, has the first blow vent; And second, opposed with described first surface, there is the second blow vent; Described main circuit rod is present in from described first blow vent to the stream of described second blow vent.
In a mode, described detection of electrical leakage unit of triping still can comprise jut, and this jut is located between described first blow vent and the zero-phase current transformer forming described electric-leakage detection circuit, and described stream is narrowed.
In a mode, described casing also can comprise: casing main body, accommodates described main circuit rod and described electric-leakage detection circuit; And casing lid, block the opening of described casing main body.In this case, described first blow vent also can comprise: face terminals portion blow vent, be located in described casing main body described face terminals portion on the face of side that is positioned at; And bottom surface blow vent, be located on described casing lid described face terminals portion on the face of side that is positioned at.
In a mode, described main circuit rod also can be configured on the line of the described face terminals portion blow vent of connection and described second blow vent.
In a mode, described detection of electrical leakage unit of triping can also comprise jut, and this jut is located between described bottom surface blow vent and the zero-phase current transformer forming described electric-leakage detection circuit, and described stream is narrowed.
Invention effect
According to the present invention, the temperature near the splicing ear portion of circuit-breaker can be suppressed to rise.
Accompanying drawing explanation
Fig. 1 represents that possessing detection of electrical leakage trips the front view of residual current circuit breaker of external solution button of unit.
Fig. 2 be represent removing detection of electrical leakage trip unit casing lid after the front view of residual current circuit breaker of external solution button of Fig. 1.
Fig. 3 is that the detection of electrical leakage of removing casing lid is triped the oblique view of unit.
Fig. 4 is that detection of electrical leakage is triped the oblique view of unit.
Fig. 5 is that detection of electrical leakage is triped the upward view of unit.
Fig. 6 is that detection of electrical leakage is triped the vertical view of unit.
Fig. 7 is that detection of electrical leakage is triped the profile of unit.
Embodiment
Below, illustrate that detection of electrical leakage is triped an execution mode of unit.
Fig. 1 represents the residual current circuit breaker of external solution button.Residual current circuit breaker generally speaking comprises multiple (such as 4) circuit-breaker 3 and detection of electrical leakage and to trip unit 4.Each circuit-breaker 3 comprises power supply terminal portion 3a and splicing ear portion 3b.On power supply terminal portion 3a, be fixed with electric wire 1 by terminal screws 2.Splicing ear portion 3b is an example in load side terminal portion.Detection of electrical leakage unit 4 of triping comprises splicing ear portion 7a (with reference to Fig. 3) and face terminals portion 4a (being respectively 4 at this).On face terminals portion 4a, be fixed with electric wire 1 by terminal screws 2.4 circuit-breakers 3 are interconnected by the connection handle 5 as handle mechanism portion.This connection handle 5 is connected to detection of electrical leakage and trips the interlock handle 6 of unit 4, links when detecting electric leakage thus cuts off circuit with the action of interlock handle 6.The example that interlock handle 6 is drive division of triping.
As shown in Figure 2, trip in detection of electrical leakage that the inside of unit 4 is winding the main circuit rod 7 (in this case 4) becoming circuit.The top of each main circuit rod 7 is welded in terminal board 8.On the path of 4 main circuit rods 7, be provided with and leak electricity as detecting and generate the zero-phase current transformer (ZerophaseCurrentTransformer, hereinafter referred to as " ZCT ") 9 of the electric-leakage detection circuit of detection of electrical leakage signal.Interlock handle 6 when ZCT9 detects electric leakage drive circuit circuit breaker 3 to carry out circuit breaker action.
As shown in Figure 3, the end side of main circuit rod 7 is established as splicing ear portion 7a, and this splicing ear portion 7a is fixed on the splicing ear portion 3b (with reference to Fig. 1) of circuit-breaker 3 by terminal screws 2.Another side of main circuit rod 7 is fixed on detection of electrical leakage via terminal board 8 by terminal screws 2 and is triped the face terminals portion 4a of unit 4.
As shown in Figure 4, detection of electrical leakage unit 4 of triping possesses terminal lid 10, casing main body 11 and casing lid 12, and their form detection of electrical leakage and to trip the casing of unit 4.In addition, detection of electrical leakage unit 4 of triping possesses conducting-heat elements 14.This conducting-heat elements 14 is formed by the sheet material such as bending to roughly L shape.This sheet material comprises the first plate portion and the second plate portion.The end side of conducting-heat elements 14 of establishing as the first plate portion connects with the end face 10a of terminal lid 10.First plate portion of the through conducting-heat elements 14 of splicing ear portion 7a of the main circuit rod 7 protected by this terminal lid 10.Another side of the conducting-heat elements 14 established as the second plate portion is configured at the side of the casing main body 11 be positioned at close to Machinery Ministry 13 side.
In addition, as shown in Figure 3, detection of electrical leakage unit 4 of triping possesses conducting-heat elements 15 in casing.In this casing, conducting-heat elements 15 is formed by the sheet material bending to such as roughly U-shaped.Conducting-heat elements 14,15 is arranged opposite across casing main body 11.
As shown in Figure 5, face terminals portion 4a casing main body 11 set by the side that is positioned at face 11a on, be formed with the face terminals portion blow vent 16 of the shape of namely cracking of roughly oblong shape.In addition, face terminals portion 4a casing lid 12 set by the side that is positioned at face 12a on, be also formed with the bottom surface blow vent 17 with the same shape of face terminals portion blow vent 16.In addition, arrange detection of electrical leakage trip unit 4 time, face 11a, 12a are towards ground side.Accordingly, temperature can be directed into box house lower than the air of box house from ground side.
As shown in Figure 6, with on the face 11b of 11a opposition side, face in casing main body 11, be formed with the upper surface air vent hole 18 with the same shape of blow vent 16,17.Face terminals portion blow vent 16 and upper surface blow vent 18 are present on same line, and this line is configured with main circuit rod 7.Upper surface blow vent 18 can be discarded to outside through face terminals portion blow vent 16 and bottom surface blow vent 17 leaked-in air from box house by from ground side.Accordingly, detection of electrical leakage trip unit 4 have based on ventilation box house refrigerating function.As shown in Figure 2 or Figure 3, main circuit rod 7 is present in from the stream of face terminals portion blow vent 16 and bottom surface blow vent 17 to upper surface blow vent 18.
As shown in Figure 7, in the inner side of casing lid 12, from the part between interlock handle 6 and face 12a, be formed with jut 19 towards casing main body 11.Jut 19 is between the bottom surface blow vent 17 be formed on the 12a of face and ZCT9.Jut 19 can make to narrow from the stream of bottom surface blow vent 17 to upper surface blow vent 18, thus to make compared with when not having a jut 19 air-flow faster directly blow to main circuit rod 7.
Then, illustrate that detection of electrical leakage is triped the effect of unit 4.
The air being directed into box house through face terminals portion blow vent 16 and bottom surface blow vent 17 from ground side flows towards upper surface blow vent 18.Now, because main circuit rod 7 is present in from the stream of face terminals portion blow vent 16 and bottom surface blow vent 17 to upper surface blow vent 18, therefore with the temperature of main circuit rod 7 during energising rises, the air of the box house of high temperature is discarded to casing outside through upper surface blow vent 18.And make flow path area reduce by jut 19, flow velocity faster air-flow blows to main circuit rod 7, therefore improves hot driving externally.As more than, detection of electrical leakage is triped unit 4 collaborating by face terminals portion blow vent 16, bottom surface blow vent 17, upper surface blow vent 18 and jut 19, and the aeration of box house and cooling improve, and is easy to cooling main circuit rod 7.Therefore, even if when the temperature of the splicing ear portion 7a of main circuit rod 7 rises, temperature rising value can be reduced by moving based on the heat of ventilation.
Present embodiment has following advantage.
(1) by the air-flow flowed from the stream of face terminals portion blow vent 16 and bottom surface blow vent 17 to upper surface blow vent 18, the temperature of main circuit rod 7 during adjoint energising can be risen and the air of the box house of high temperature is discarded to casing outside.Accordingly, the heating of main circuit rod 7 is dispelled the heat thus the splicing ear portion 3b of circuit-breaker 3 is cooled, therefore, it is possible to suppress the temperature near the splicing ear portion 3b of circuit-breaker 3 to rise.
(2) by arranging jut 19, flow path area reduces compared with when not having a jut 19, and flow velocity accelerates.Therefore, flow velocity faster air-flow blow to main circuit rod 7.Therefore, it is possible to promote the cooling effect of main circuit rod 7.
(3) can will to transmit in conducting-heat elements 15 in conducting-heat elements 14 and casing from splicing ear portion 7a and the heat arriving box house is discarded to casing outside together with air-flow.
(4) be inhibited, therefore without the need to installing the lid for covering splicing ear portion 3b separately because the temperature near the splicing ear portion 3b of circuit-breaker 3 rises.Namely, without the need to arranging the special parts of the temperature reduction of the casing made near splicing ear portion 3b.
In addition, the respective embodiments described above also can change as follows.
The configuration of face terminals portion blow vent 16, bottom surface blow vent 17, upper surface blow vent 18 is not limited to above-mentioned execution mode.But, preferably, arrange detection of electrical leakage trip unit 4 time air-flow flow from ground to its opposite direction.Accordingly, the air of temperature lower than box house can be imported.
The shape of face terminals portion blow vent 16, bottom surface blow vent 17, upper surface blow vent 18 is not limited to above-mentioned execution mode.But preferably, these blow vents 16 ~ 18 are for being easy to the shape of processing.
The shape, position, angle, number etc. of jut 19 at random can set according to the flow velocity or flow etc. of air flow demand.
Claims (5)
1. detection of electrical leakage is triped a unit, can be filled to circuit-breaker outward, possess:
Casing;
Face terminals portion, is connected to electric wire;
Splicing ear portion, is connected with the load side terminal portion of described circuit-breaker;
Main circuit rod, is arranged as the circuit connecting described face terminals portion and described splicing ear portion;
Electric-leakage detection circuit, is located on the path of described main circuit rod, detects electric leakage; And
To trip drive division, drive when described electric-leakage detection circuit detects electric leakage described circuit-breaker to carry out circuit breaker action;
Described casing comprises:
First surface, is arranged on the side that described face terminals portion is positioned at, has the first blow vent; And
Second, opposed with described first surface, there is the second blow vent;
Described main circuit rod is present in from described first blow vent to the stream of described second blow vent.
2. detection of electrical leakage as claimed in claim 1 is triped unit, also possesses:
Jut, is located between described first blow vent and the zero-phase current transformer forming described electric-leakage detection circuit, and described stream is narrowed.
3. detection of electrical leakage as claimed in claim 1 is triped unit,
Described casing comprises:
Casing main body, accommodates described main circuit rod and described electric-leakage detection circuit; And
Casing lid, blocks the opening of described casing main body,
Described first blow vent comprises:
Face terminals portion blow vent, be arranged in described casing main body described face terminals portion on the face of side that is positioned at; And
Bottom surface blow vent, be arranged on described casing lid described face terminals portion on the face of side that is positioned at.
4. detection of electrical leakage as claimed in claim 3 is triped unit,
Described main circuit rod is configured on the line of the described face terminals portion blow vent of connection and described second blow vent.
5. detection of electrical leakage as claimed in claim 3 is triped unit, also possesses:
Jut, is located between described bottom surface blow vent and the zero-phase current transformer forming described electric-leakage detection circuit, and described stream is narrowed.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2013064330A JP6037229B2 (en) | 2013-03-26 | 2013-03-26 | Earth leakage detection trip unit |
| JP2013-064330 | 2013-03-26 | ||
| PCT/JP2014/001309 WO2014156000A1 (en) | 2013-03-26 | 2014-03-07 | Ground-fault-detecting tripping unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105122415A true CN105122415A (en) | 2015-12-02 |
Family
ID=51623021
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201480016682.3A Pending CN105122415A (en) | 2013-03-26 | 2014-03-07 | Ground-fault-detecting tripping unit |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP6037229B2 (en) |
| CN (1) | CN105122415A (en) |
| WO (1) | WO2014156000A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108538684A (en) * | 2017-04-17 | 2018-09-14 | 乐清大唐新能源有限公司 | A kind of Minitype electrical leakage breaker and reclosing breaker |
| CN109524277A (en) * | 2018-11-16 | 2019-03-26 | 公牛集团股份有限公司 | A kind of connection component and modular breaker |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114156105B (en) * | 2021-11-16 | 2024-03-08 | 扬州鹿洵智能科技有限公司 | Load immersed leakage protection switch |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2513222Y (en) * | 2001-12-25 | 2002-09-25 | 陈酌升 | Combined leakage protection controller |
| JP2007242463A (en) * | 2006-03-09 | 2007-09-20 | Nitto Electric Works Ltd | Circuit breaker |
| CN201060828Y (en) * | 2007-06-05 | 2008-05-14 | 丁文军 | Electric leakage circuit breaker |
| CN101281837A (en) * | 2007-04-05 | 2008-10-08 | 浙江正泰电器股份有限公司 | Modularization aftercurrent actuating protector |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2538524Y2 (en) * | 1991-05-20 | 1997-06-18 | 三菱電機株式会社 | Circuit breaker |
-
2013
- 2013-03-26 JP JP2013064330A patent/JP6037229B2/en not_active Expired - Fee Related
-
2014
- 2014-03-07 WO PCT/JP2014/001309 patent/WO2014156000A1/en active Application Filing
- 2014-03-07 CN CN201480016682.3A patent/CN105122415A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2513222Y (en) * | 2001-12-25 | 2002-09-25 | 陈酌升 | Combined leakage protection controller |
| JP2007242463A (en) * | 2006-03-09 | 2007-09-20 | Nitto Electric Works Ltd | Circuit breaker |
| CN101281837A (en) * | 2007-04-05 | 2008-10-08 | 浙江正泰电器股份有限公司 | Modularization aftercurrent actuating protector |
| CN201060828Y (en) * | 2007-06-05 | 2008-05-14 | 丁文军 | Electric leakage circuit breaker |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108538684A (en) * | 2017-04-17 | 2018-09-14 | 乐清大唐新能源有限公司 | A kind of Minitype electrical leakage breaker and reclosing breaker |
| CN109524277A (en) * | 2018-11-16 | 2019-03-26 | 公牛集团股份有限公司 | A kind of connection component and modular breaker |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2014191909A (en) | 2014-10-06 |
| JP6037229B2 (en) | 2016-12-07 |
| WO2014156000A1 (en) | 2014-10-02 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20151202 |